Ice-cream machinery.



R. R. ROW.

ICE CREAM MACHINERY.

APPLICATION FILED FEBJQ, 1909. '941, 1 72.

Patented Nov. 23, 1909. 9 K

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EEUBEN ROBERT ROW, F JERSEY CITY, NEVI JERSEY,; ASSIGNOE. TO THE GYRISGOIVI-V SPENCER COMPANY, GF NEW' YORK, N. Y., A. CORPORATION OF NEW JERVSEVY". A' l' ICE-CREAM MACHIIWRY.'

Specification of Letters Patent.

Application filed February 19, 19648. Serial No. 4?8,9S0.

atente'd Nov.

and State of New Jersey, have mventedcertuin new and useful improvement-s in Ice- Cream Machinery, of which the following is a spcciiication.

Y and abut respectively 'against My invention relates to ice cream freezing vmachines in which the cream 1s frozen by the circulation of a freezing iuid, the latter i circulating in a chamber surrounding the receptacle 1n which the cream 1s placed.

in prior machines it has been usual tol provide the freezinf-iuid chamber by the use of concentriccy indrical shells attached by brazing, riveting, soldering or other per'- manent joint to rings or heads closing the tops and bottom-s of the cylinders. The making of this joint involves expense in manufacture, and it is objectionable in that whenever itis necessary to disconnect the heads from the cylinders in order to effect repairs, the service of skilled metal-working artisans is required.

My present invention is intended to reduce this' manufacturino` expense and to avoid the cost and trouble in making repairs incident to the use of skilled labor. To this end l propose to provide a detachable joint between the .cylinders and the heads. This joint l make uid proof by means of gaskets of rubber or other suitable material, at the sameL time protectingv the rubber against the destructive action of the contents of the freezer by the application to the rubber of a layer of suitable cement, as marine glue, or other appropriate plastic compound.

In the drawings annexed hereto and forming part of this speciiication Figure l is a vertical view partlyin section of my improved apparatus; and Fig. 2 is a sectional enlar ed view of the joint.

-Re erring to the drawings, the ice cream freezer is made up of two heads i and 5 connected by concentric cylindrical shells l and '2 between which is the freezing fluid `chamber 3. V44Thends' ofv the shells are received in circular-"grooves in the two heads askets 7 of rubber, or otherv compressib e material. The heads aredrawn toward each other and tightenedupon the shells by rods 6 which pass loosely through holes in head 4, are

the fluid. An inclosing shell 10 is suitably" attached by screws or otherwise to the heads. Within the shells are shown two sets of dashers or blades revolved inoppo# site directions by appropriate gearing'.

The specific construction of this part of the apparatus is, of course, immaterial to my present invention, which is concerned only with the joints between the heads and the shells.' l

Under the term cement as used herein, l' intend to include any kind of plastic and adhesive material suitable for the purpose of fortifying the'joint and protecting the gaskets from the fluid.

The gasket may be made of any suitable compressible substance. I find that india rubber gives good service for this purpose.

The improvement herein describedis capable of application to a freezer horizontally arranged as well as of the vertieal`type shown.

The gaskets need not necessarily be set in grooves, and their shape may be modified vfrom that shown.

3, isos.

It will be understood that with this construction all that is needed to obtain access to the interior of the freezer and to remove the shells, or either of them, for the pu ose' of repair or replacement, is to take'o the inc-losing shell l() and to loosen the nuts 8, which can be done by any intelligent person whether or not he is an artisan skilled in metal Working.

Claimsl. An ice cream freezer provided with a chamber about the same for the circulation of a freezing iiuid, said chamber being formed by two concentric cylinders the ends of which are received in grooves of the heads and rest against gaskets, thegaskets being protected by` cement, substantially as set forth.

2. ln an ice cream freezer, the combination of the heads, thecylnflrical chamber walls, and the gaskets against which the ends of the walls rest, the security of the joint being reinforced and the rubber protected by a, f compressed rubber gasket. protected by a layer of cement placed over the latter, substantially as set forth. 3. Inan ice cream freezer, the combina- 5 tion of the chamber walls l and 2, the heads 4 and 5 provided-with grooves, and the gas- -kets 7 protectedby cement, substantiallyas forth. Y

In Wit-ness whereof, I have signed my name in the presence of two witnesses.

REUBENROBERT ROW.

set forth.' Witnesses:

4. 'In an ice cream freezer, a jomt between GEO. H. HULL,

S. ILLfBUIlvELL.`

10 the cylinder and the head consistingof a layer. of manne glue, substantially as set 

